What can bulldozers and screen doors have in common? Use this activity on fluid power to find out. It begins with some simple teacher demonstrations, includes a couple of videos, and culminates with an inquiry-based activity to...

Young hydrologists observe a waterwheel which helps them investigate the transformations of energy that occur when the blades of a hydro-turbine are turning. They work together in pairs and pretend to be engineers who are building a new...

Students investigate the reasons why wetlands are threatened especially by people. They study the wise use of water to preserve wetlands.